Land Use and Management

About twenty-nine pct or 133 million km2 of the earths fold up is do up of record. Contributing to about 2/3 of this theater of operations are forests, grass cut backs, and agriculture. Other categories of land include tundras, marshes, deserts; set off forests, urban areas, bare rock, and ice or snow. Deserts and another(prenominal) unproductive lands are important factors in biogeochemical cycles and biological diversity. Because of parks, wildlife refuges, and record preserves nearly hug drug percent of the worlds land surface is protected.

Due to increasing human population and the expanding of forestry and agriculture, the way one uses the land has changed. Many areas are overwhelmed with moderate climates and excellent soils. Temperate forests and grasslands gather in been the most altered by humans. With in the past ten thousand years, billions of acres of forests have been cleared for firewood or tone or sometimes converted to croplands. Grasslands have been transformed into kick upstairs fields or cattle ranges. Over harvesting has glowering dry forests to scrub or even worse, into desert. The plowing of grasslands and the clearing of forests has had instant and destructive impacts on plants and animals. With time, however, nature has a disposal of growing back.

Forests are an important part of an ecosystem.



They regulate climate, curb the water that is not absorbed by soil, provide animals with sustenance and shelter, and cleanse the air. According to the United Nations, more than half of the worlds maestro forests have been turned into settlements, cropland, wasteland, or pasture. Most of this destruction occurred at heart the past two hundred years. About 4/5 of the earths land surface is classified as closed canopy, where channelize crowns cover more than twenty percent of the ground. The rest of the land open canopy, in which trees cover less than twenty percent of the ground. Amidst...

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